Car-trolley.



head trolley line..

"emiten srnrns PATENCDOFFICE.-

seaux E. oovnY, or OAKLAND, CALIFORNIA, Assionon or bnn-nature oHAnLEs. W.

' YoLLAND,- or BERKELEY, onnrromrrn CABFTROLLEY.

Speci'eationot' Letters Patent. i f 'Patented Dec. 30, 191.3.

Application' led J' une 17, 1912, `.Serial No.l 704,076.

tric railways, and'particularly to alrauto-v matin-ally reversible trolley.

The object ofthe presentvlnvention is.' to.-

provide an eflicient and `practica-l trolley and- 'ci'.llccting wheel for use onhigh speed and otfxer railway syste-ms involving an over- It a particular object to provide a trol-l ley designed to obviate the-necessity of manually swinging or reversing the trolley pole when the direction of travel of the caris to be reversed.

pA further object o'f. this inventionis'to provide. a trolley involving a. single, telescopic trolley' pole connected by counterbalancing springs, `and'which ole is provided with a collectingwheel ,longitudinally shifta'ble relative to the pole-'to compensate for vcurvatures in the 'line-andfsuch other forces as tendto swing the pole' laterally..

The' invention consists in a telescopic,

yspringI actuated end counterbalancedf oscil- .lating pole with a laterally shiftable current collecting wheel ldesigned toA automatically and safely shift at bfonching lnes'without ldanger ofjuiiping.

ln its illustrated form, the invention com- -I prises a. pedestal or base 2, which maybe bolted or otherwise suitably Afastened to the' deck of a'car or other structure 'on which it. may be desirable to mount the trolley. The base 2 is provided with two cam sur' faces 3, whose high points and low points are diametrically opposite each other.. Resting upon the-cam surfaces 3 are rollers 4 lss journaled infas" inging Achair 5,the verti-y cal hub 6 of 'vv'.ln isf-'centrally chambered 'tion 16 of the trolley pole.`

so as to embrace vandoscillate about a .sub-l 'stantial spindle or journal .7 on the base 2,

. .'The upper end of the vchair hub.v 6 is provided'. with a p1vot'8, upon wliichfis pivoted to swing 1n the plane of arms,9 of the chair a lower tubular "pole sectionlO, .to which .maybe appropriately -connected dianietriJ cally opposite arms l1'. The ends o'f-th-e armsll. are perforated, as at 12', to receive opposed tension springs 13, the ends, of

whichv are secured in eyes 14 formed in a" the ends of the arms 9 of.l

common plane in the chair 5.

The functionof the tension springs-13 isv to normally maintain the trolley pole section or s ocket'inember 10 'in approximately 'a vertical posit-ion; the Asprings each exerting 'a tension `when the pole' section 10 is oscillated about its fulcruni .8., Since the eyes v12 ofthe'pole arms 11 and the eyes 14 of the chair-arms 9 are designed to' be in 1a uni.-

form planegit is manifest that when the pole section 10 oscillates, one of the. arms 11 moves below `the` fulcrum S tensioning its respective spring, While the' opposite arm '1 1* swings 'upwardly likewise tensioning its' respective spring, 'the combined force of vwhich springs is efective to bringthe pole to avertical position. l

ithin the socket-section 10 ofthe pole is provided a. .substantial expvansile spring or other suitable equivalent' 15, upon which reststhe upper section or end 1 6 ofthe trolley pole'whichds normally forced upwardly by tie expansile spring 15 so as tocarry a collecting spoolor wheel 17 with sufliccnt force against the trolley line 18 to make an effective electrical contact. The spool 17 is freely shiftable longitudinally upon an axis -or shaft 19, which is suitably secured in bearings 20 at the ends of a yoke or crosshead 21;l the latter being rigidly secured to the upper end of'a. plunger or telescopic sec- When the p ole stands clear 1n a vertical position, the upward movementofthe plunger 16 dueto the force of its spring ylimited by a pin or other suitable stop 22 engaging a collar or end shoulder 23 -of a slot-g or recess 24 formed in the'pivotecl pole' section 10.

VVhen t placed against the trolley wire 1S, the operator pulls-,on a retrieving rope 25. ".lhe-l rope '25 is led downwardly to a convenient.

the collecting spool '17 is to be may bel mounted is traveling in onel directhe prongs. 30 while thebranch. of the wire which is being followed by the car will re-l main in operativev engagement with the trol ley spool.

When I- the car upon which the trolley tion, the inclination ofthe trolley pole will .be upwardly andjrearwardly away from the vdirectionof travel of the car; As the ca r stops and when its direction of travel; is

I reversed,.the telescopic plunger will recede l inthe socket section lof the pole vand allow thejtrolley spoolvv to pass vertically from the fao center lof the chair until the pole vassumes an ang'le opposite to 'that which' it attained previous to the reversal of direction of movement tof the car. This is a manifest ad- 'vantage in trolley constructions especially o f a siuglep'ole trolley`for it obviates the requirement of manual adjustment of theA Itrolley pole when the ,direction .of the'car is to be reversed;

`Having thus described my invention,

25: .what I claim and desire to secure by Let-1 ters Patent is-v I 1. The", combination with-a trolley pole,

of afch'air upon which the pole is pivoted,

@means connected to the chair for normally --l();ma intaining the pole' in a vertical position,

altr'olley wheel mounted upon the upper 'end fof the pole, and a base upon which said "chair may turn having cams for normally the line of travel. '1355.- 2.' In an electric maintaining the chair in the direction of trolley, a carrier turnfiigable about a vertical axis for a distance 'on each vside of a center line, a pole'pivotally connected to said carrier for inclination op of the travel pOSitely Vin a common plane from a vertical position, tension springs' connected at their outer ends to the'carrier and at their inner ends 'to the lowerA part 'of the pole and in `the horizontall plane of'its pivot, said springs acting in opposition to press the pole toward' the vertical from either inclination,

and a fixedy base upon which the carrier is mountedand, having means for automatically maintaining said carrier and pole so that the tilting .plane of"the latter is in the' line of travel.

plane :from the 'vertical, tension springs connected'at their buter ends to the carrier and at their'linner ends to the lower part of the p ole and in the horizontal plane of itslpivot,

said springs acting `in opposition to press the pole toward the vertical from either inclination, a lixed base `upon the carrier mounted and lhaving lmeans for automatically maintaining carrier and pole so that the tilting plane of thelatter is in the line of travel, and means consisting of a slidable wheel on the pole for relieving the car-v lrier and its pole pivot of tilting strains F. E. MAYNARD, JOHN H. Humana'.

3. In an electric trolley, a carrier turnv 5 .able about a .vertical axis for a distance on yeach side ofa center line, an extensible,l telescopic polepivotally connected to'v said carlrier. for inclination Oppositely in a common 

